(Statistical Reasoning in Everyday
Life) Questions – 100% Correct,
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Sidebar ANSW ✔✔ Steps out of the flow of the overall point to learn something you need
to understand the next step in the overall point
mode ANSW ✔✔ the most frequently occurring score(s) in a distribution
mean ANSW ✔✔ the arithmetic average of a distribution, obtained by adding the scores
and then dividing by the number of scores
median ANSW ✔✔ the middle score in a distribution; half the scores are above it and half
are below it
range ANSW ✔✔ the difference between the highest and lowest scores in a distribution
standard of deviation ANSW ✔✔ a computed measure of how much scores vary around
the mean score
normal curve ANSW ✔✔ the symmetrical bell-shaped curve that describes the distribution
of many physical and psychological attributes. Most scores fall near the average, and fewer
and fewer scores lie near the extremes.
normal curve is also known as ANSW ✔✔ normal distribution
statistical significance ANSW ✔✔ a statistical statement of how likely it is that an obtained
result occurred by chance, assuming there is no difference between the populations being
studied